/**
 * @(#)com.pattern.p_02_observer.weather.Subject
 *
 * Copyright (c) 2014-2018 上海纬视瑞科技有限公司
 *
 * DESC:
 *
 */
package com.pattern.p_02_observer.weather;


/**
 * @author fusf
 * @version 1.0  2016/11/7
 */
public interface Subject {

    public void registerObserver(Observer1 o);

    public void removeObserver(Observer1 o);

    public void notifyObservers();



}
